3821991263 has 2 divisors, whose sum is σ = 3821991264. Its totient is φ = 3821991262.

The previous prime is 3821991253. The next prime is 3821991311. The reversal of 3821991263 is 3621991283.

It is a weak prime.

It is an emirp because it is prime and its reverse (3621991283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3821991263 - 2¹² = 3821987167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3821991223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910995631 + 1910995632.

It is an arithmetic number, because the mean of its divisors is an integer number (1910995632).

Almost surely, 2^3821991263 is an apocalyptic number.

3821991263 is a deficient number, since it is larger than the sum of its proper divisors (1).

3821991263 is an equidigital number, since it uses as much as digits as its factorization.

3821991263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 3821991263 is about 61822.2554020799. The cubic root of 3821991263 is about 1563.4952397190.

The spelling of 3821991263 in words is "three billion, eight hundred twenty-one million, nine hundred ninety-one thousand, two hundred sixty-three".